Term Extraction Documentation for Yahoo! Search
Submitting Term Extraction Queries
The Term Extraction Web Service provides a list of significant words or phrases extracted from a larger content. It is one of the technologies used in Y!Q.
Request URL
http://search.yahooapis.com/ContentAnalysisService/V1/termExtraction
Note: Due to the context being a potentially
lengthy string, Term Extraction requests should be submitted using an
HTTP POST request rather than GET. If you plan to use serialized
PHP output, consider CURL to
post the request rather than PHP's file_get_contents().
You'll then need to remove the HTTP headers before evalutating the
code with unserialize().
Request parameters
See information on constructing REST queries
| Parameter | Value | Description |
|---|---|---|
| appid | string (required) | The application ID. See Application IDs for more information. |
| context | string (required) | The context to extract terms from (UTF-8 encoded). |
| query | string | An optional query to help with the extraction process. |
| output | string: xml (default), json, php | The format for the output. If json is requested, the results will be returned in JSON format. If php is requested, the results will be returned in Serialized PHP format. |
| callback | string | The name of the callback function to wrap around the JSON data. The following characters are allowed: A-Z a-z 0-9 . [] and _. If output=json has not been requested, this parameter has no effect. More information on the callback can be found in the Yahoo! Developer Network JSON Documentation. |
Sample Request (URL: http://search.yahooapis.com/ContentAnalysisService/V1/termExtraction):
Response fields
The schema document for this service response is located at http://search.yahooapis.com/ContentAnalysisService/V1/TermExtractionResponse.xsd
| Field | Description |
|---|---|
| ResultSet | Contains all of the extracted terms. |
| Result | The text of each extracted term. Terms are returned in order of importance. |
Sample response
The following is a sample response for the sample query above:
Rate Limits
The Term Extraction service is limited to 5,000 queries per IP address per day and to noncommercial use. See information on rate limiting.
Terms of Use
Please see our Usage Policy to learn about acceptable uses and how to request additional queries.
Errors
The Term Extraction service returns the standard errors. There are no service-specific errors.
Support & Community
The Term Extraction Search service is discussed on the yws-search-general mailing list.
Ready to get started?
By applying for an Application ID for this service, you hereby agree to the Terms of Use
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